Collins R390A

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Art Collins founded Collins Radio Company in 1933 in Cedar Rapids, Iowa for the purpose of designing and producing both shortwave and AM broadcast radio equipment and equipment.

The company introduced their first amateur radio receiver, the 75A-1 around 1947. This unit achieved excellent stability due to high build quality and the use of a permeability tuned oscillator (PTO) in its second conversion stage. It was one of the few dual-conversion superheterodyne receivers manufactured at that time and was designed to receive only the amateur bands.

The 75A amateur line was continued throughout the early 50s, ending with the 75A-4, released in 1955. The Collins mechanical filter was introduced in the 75A-3, and the 75A-4 was one of the first receivers marketed specifically as a single sideband receiver.

In 1958 the 75A series was replaced with the much smaller 75S series, part of the S/Line. These top-end receivers featured mechanical filters, excellent stability and very accurate frequency readout.

With the introduction of the S/Line in 1958, Collins moved to an integrated equipment system, making them the first manufacturer to take this approach. Collins was also introduced a compact HF transceiver, the KWM-1, the year before. These two innovations put Collins ahead of its competition and set the stage for other amateur radio equipment makers and the next generation of HF radios.

In 1978, the S/Line came to an end after a two decade run. The KWM-380 transceiver was introduced the next year – innovative in its use of transistors and digital technology, and its styling. It was Collins’ final entry in the amateur radio market until it was discontinued in the mid-1980s.

The Collins Radio Company was purchased by Rockwell International in 1973. In 2001 the avionics division of Rockwell International was spun off to form the current Rockwell Collins, Inc., retaining its name. Rockwell Collins serves the defense and commercial avionics industries and no longer markets receivers to the public. The company today employs over 19,000 people.

More information on Collins Radio:
Wikipedia reference on Collins Radio
Collins Collectors Association
Virtual Collins Radio Museum

Collins R390A EBay Bargains!

Collins R-390A Receiver Operators Manual Reprint
Collins R-390A Receiver Operators Manual Reprint
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Current price: $9.95 (0 bids)
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6DC6 Vacuum Tube New Philips/ECG Collins R-390A et
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Collins R-390A original engraved nameplate replace
Collins R-390A original engraved nameplate replace
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Current price: $25.00 (1 bid)
Collins R-390A Parts Manual With Lots Of Photos
Collins R-390A Parts Manual With Lots Of Photos
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Current price: $14.95 (1 bid)
Coil/transformer module - Collins R-390A receiver
Coil/transformer module - Collins R-390A receiver
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Current price: $6.00 (0 bids)
!!!TEFLON TUBING COLLINS R-390A 75S-1 75S-3 75S-3B
!!!TEFLON TUBING COLLINS R-390A 75S-1 75S-3 75S-3B
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Current price: $8.50 (2 bids)
R-390A RECEIVER DESIGNED by COLLINS R-390A/URR Rad
R-390A RECEIVER DESIGNED by COLLINS R-390A/URR Rad
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Set of 4 Manuals for Collins R-390A Receiver Op Re
Set of 4 Manuals for Collins R-390A Receiver Op Re
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Set of 3 Manuals for Collins R-390A Receiver  Oper
Set of 3 Manuals for Collins R-390A Receiver Oper
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Collins R-390A RF Gain Control
Collins R-390A RF Gain Control
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CV-581A-URR SINGLE SIDEBAND CONVERTER By TMC For C
CV-581A-URR SINGLE SIDEBAND CONVERTER By TMC For C
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Genuine Original Collins R-390A Audio Line Output
Genuine Original Collins R-390A Audio Line Output
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Collins R-390A Band Pass Filters 800 CPS 10K - 600
Collins R-390A Band Pass Filters 800 CPS 10K - 600
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Collins R-390A Receiver Maintenance Standards Manu
Collins R-390A Receiver Maintenance Standards Manu
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Collins R-390A Receiver JX Filter Sprague Y-15228
Collins R-390A Receiver JX Filter Sprague Y-15228
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COLLINS R-390A URR Vtg Tube Receiver With RARE Mil
COLLINS R-390A URR Vtg Tube Receiver With RARE Mil
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Collins R-390A Parts Manual
Collins R-390A Parts Manual
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COLLINS  R-390A   TUBE  KIT
COLLINS R-390A TUBE KIT
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Collins R-390A Crystal Modulator Oscillator No Cry
Collins R-390A Crystal Modulator Oscillator No Cry
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Collins R-390A Crystal Modulator Oscillator No Cry
Collins R-390A Crystal Modulator Oscillator No Cry
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Collins R-390A Crystal Modulator Oscillator No Cry
Collins R-390A Crystal Modulator Oscillator No Cry
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Collins R-390A RF Tuner Assembly Deck Connectors N
Collins R-390A RF Tuner Assembly Deck Connectors N
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Collins R-390A Rear Panel and Wiring Harness #1
Collins R-390A Rear Panel and Wiring Harness #1
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CAPEHART POWER SUPPLY Solid Stated from military C
CAPEHART POWER SUPPLY Solid Stated from military C
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Collins R-390A Receiver Basic Maintenance Manual
Collins R-390A Receiver Basic Maintenance Manual
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Collins R-390A Radio Op & Repair Manual Reprin
Collins R-390A Radio Op & Repair Manual Reprin
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COLLINS R-390A/URR Vintage Tube Receiver ~ Powers
COLLINS R-390A/URR Vintage Tube Receiver ~ Powers
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Collins r-390a complete RF, variable IF coil set w
Collins r-390a complete RF, variable IF coil set w
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KINGS BNC Female to C Male Ludlum UG-636A/U RF con
KINGS BNC Female to C Male Ludlum UG-636A/U RF con
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6BJ6 Vacuum Tube LG Electronics Collins R-390A Lot
6BJ6 Vacuum Tube LG Electronics Collins R-390A Lot
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6BJ6A Vacuum Tube Philips/ECG Collins R-390A Lot o
6BJ6A Vacuum Tube Philips/ECG Collins R-390A Lot o
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Collins R-390A Receiver NEW Chassis Mounted Capaci
Collins R-390A Receiver NEW Chassis Mounted Capaci
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Stuart Warner Audio Deck module from Collins R-390
Stuart Warner Audio Deck module from Collins R-390
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Current price: $49.00 (0 bids)
Collins R-390A Instruction Manual - Premium Card S
Collins R-390A Instruction Manual - Premium Card S
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Collins R-390A receiver!!!!!! Global shipping avai
Collins R-390A receiver!!!!!! Global shipping avai
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SELENIUM RECTIFIER from Collins R-390A/URR  Milita
SELENIUM RECTIFIER from Collins R-390A/URR Milita
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Resistors & Circuit Board from Collins R-390A/
Resistors & Circuit Board from Collins R-390A/
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Collins R-390A Radio Repair Manual Reprint
Collins R-390A Radio Repair Manual Reprint
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BNC Female to C Male Ludlum UG-636A/U adapter Coll
BNC Female to C Male Ludlum UG-636A/U adapter Coll
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BNC Female to C Male Ludlum UG-636A/U Coaxial conn
BNC Female to C Male Ludlum UG-636A/U Coaxial conn
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Current price: $19.95 (307 bids)

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